I’m trying to write a response interceptor for my React project but I am having some issues. When a user gets a 401 from their original request I want to try and refresh the token and continue, but if the user gets a 401 from their original request and when trying to refresh the token it fails then redi…
why does the event listener in this throttling function behave like that?
While I was learning about throttling in javascript, I came upon an event-listener behavior that I can’t explain. Here is a simple throttling function. I have two questions. Why does let prev = 0; only get called once? i.e why doesn’t prev get reset to 0 every time the function is called? I have a…
How to append html tags from an div onto another div?
Is it possible to append html tags from a content-editable div to another div? I wanted to make an html editor, and I wanted to make automatic preview. Here is the jsfiddle code: https://jsfiddle.net/eqw8L4to/12/ And here is the js code where I tried getting html tags from .html, and tried appending it to .re…
Check if optional chaining is supported
I want to use a polyfill for optional chaining but I do not want to provide a polyfill for browsers which already support this feature. Is there a way to determine whether a browser supports optional chaining ? Answer This works:
How to test if contextmenu is open or displayed?
I have a page with a few pre tags in it containing computer code. I have a mouseover event listener, which highlights all the code in the pre tag. I also have it remove the highlighting on a mouseout event. Works real well if you use the keyboard to copy (ctrl-C). But if you want to right-click and copy from
Preventing “not wrapped in act(…)” Jest warning when state update doesn’t affect UI
I’m trying to figure out if there is a way to prevent the “not wrapped in act(…)” warning thrown by Jest/testing-library when I have nothing to assert after the state update that causes the warning happens, or if I should just ignore this warning. Suppose I have this simple component: …
How can I change background color of a specific area in my chart’s grid using Chart.js and Annotation?
I’m having some trouble trying to change the backgroundColor of a specific chart area between two yAxis ticks.This is what I have so far: And this is what I wanted: I’ve seen some similar posts about that and people recommend using Annotation to do this. I tried using it on my chart and it didn…
Iterate through all children and children children of an object
I have an object with children objects, and even great grandchildren objects. I am currently using Which produces, for example: created_at: 2021-01-01T00:00:00.000Z id: string data: [object Object] items: [object Object],[object Object] How do I iterate through any number of child objects to return something …
Getting trxId from PayPal buttons API when sending the request
I’m working on the integration with PayPal using the Smart Payment Buttons, and I need to catch the trxId generated when the user presses the “Pay With PayPal”, when I print the info on the console, I can see the value I need, but when debugging or trying to get the value of the var, I’…
Ionic pass in variable into library to Initialize firebase with
The solution consists of One Ionic Solution One Library called CoreLib Problem Initialize the firebase module inside the CoreLib with an injected variable from the ionic solution. I can pass in a variable to the CoreLib library from the ionic solution no problem. Issue is, the AngularFireModule.initializeApp …